Huanghua Group Co., Ltd. 
ZW32-24 Outdoor Column Mounted Vacuum Circuit Breaker (Intelligent Type)
Overview
ZW32 -24 type of outdoor high voltage vacuum circuit breaker using integral uniquedesign of embedded pole and high reliability of the operating mechanism. The device ismainly used in medium voltage overhead power grid, As, Load current, overload currentand short-circuit current. The product according to IEC600271-111
Target Applications ：Medium-voltage overhead distribution lines; distribution automation; urban/rural grids; feeder & branch protection; grid sectionalizing; outdoor installations needing durable enclosures.
High Reliability
High Mechanical Life
Small Size, Light Weight, Easy To Install
Highlights and advantages
| Highlights | Detail |
| Embedded Pole & Longitudinal-Field Arc Control | Integral solid-sealed pole with vacuum interrupter; longitudinal magnetic field keeps arc diffuse for strong, stable breaking. |
| High-Reliability Spring Mechanism | Supports electric/manual energy storage, closing, opening, auto-reclosing and overcurrent trip (DC 24 V). |
| 10,000 Mechanical Operations | Mechanical life and breaking times at rated current both reach 10,000 operations for long service life. |
| Stainless Steel 304 Housing | Corrosion-resistant outdoor enclosure for long-term pole-mounted exposure. |
| Intelligent Control Ready | Matched FTU controller (non-communicating version) for local operation; supports ABC three-phase current protection and voltage sensing. |
| Optional Disconnector ZW32-24CD | Visible isolation function for safer maintenance and clearer switching states. |
working principle
ZW32 type of outdoor high voltage vacuum circuit breaker is mainly composed of an integrated solid sealed pole, Current transformer, The actuator and a box body. This type of circuit breaker is designed for miniaturization, The shell is made of high quality steel box. The current transformer can according to the needs of users
ZW32 intelligent outdoor high voltage vacuum circuit breaker and matched control group.
On the realization of on-off switch operation, Can also be through the communication interface by the remote operation. Other information about the circuit breaker can also be transmitted to the control center.
Arc extinguishing principle
ZW32 vacuum breaker adopts excellent arcing ability vacuum arc extinguish chamber.Under the operating mechanism,when moving and static contact Livetripping,vacuum arc will occur between the contacts,meanwhile due to the specialstructure of the contact,appropriate longitudinal magnetic field is also generated in theclearance of the contact,keeping the vacuum arc diffusive,and arc is uniformly distributedon the contact surface,keeping a low arc voltage, When the current naturally passes zero,Residual ion,electron and metal vapors can be combined or condensed on the contactsurface and shield in the order of microseconds,the dielectric strength of the fracture inthe arc chamber of electron and metal was quickly restored,thus the arc is extinguished to achieve the purpose of breaking.Due to the control of vacuum arc with longitudinal magnetic field,so the vacuum breaker has a strong and stable current breaking capacity.
Principle of electric energy storage
Motor output torque acting on the ratchet,through paw drive cam, turn the armrotating,enable the closing spring to store energy, when the convex shoulder press tripswitch on the arm, cut off the motor power, the spring finished energy storage
Structure and Appearance
